/**
 * Check if an element has a class
 * @param {HTMLElement} ele
 * @param {string} cls
 * @returns {boolean}
 */
export function hasClass(ele: HTMLElement, cls: string) {
  return !!ele.className.match(new RegExp("(\\s|^)" + cls + "(\\s|$)"));
}

/**
 * Add class to element
 * @param {HTMLElement} ele
 * @param {string} cls
 */
export function addClass(ele: HTMLElement, cls: string) {
  if (!hasClass(ele, cls)) ele.className += " " + cls;
}

/**
 * Remove class from element
 * @param {HTMLElement} ele
 * @param {string} cls
 */
export function removeClass(ele: HTMLElement, cls: string) {
  if (hasClass(ele, cls)) {
    const reg = new RegExp("(\\s|^)" + cls + "(\\s|$)");
    ele.className = ele.className.replace(reg, " ");
  }
}

/**
 * @param {string} path
 * @returns {Boolean}
 */
export function isExternal(path: string) {
  const isExternal = /^(https?:|http?:|mailto:|tel:)/.test(path);
  return isExternal;
}

/**
 * 转树状结构
 * @param list 
 * @param pid 
 */
// 递归遍历
export function transListToTreeData<T extends {value?:string,children?:T[], id: string; pid: string; name: string }>(list: T[], pid: string): T[] {
  const arr: T[] = [];
  list.forEach(item => {
    item.value = item.name;
    if (item.pid === pid) {
      const children = transListToTreeData(list, item.id);
      if (children.length > 0) {
        item.children = children;
      }
      arr.push(item);
    }
  });
  return arr;
}
